The term reference has already been used to contrast with denotation. It is also used in a useful, but wider sense, to contrast with sense, to distinguish between two very different, though related, aspects of meaning. ...

The present study evaluates the potential of chemically modified, immobilized Chara algae (C. vulgaris) to remove copper and lead from aqueous solutions. Chara algae were prepared and studied for their ability to remove ...